There's no tie to what those terms mean and the actual engineering of the chips.
The "2nm node" is a marketing term to indicate its placement relative to previous iterations and competitors.
The reality is that process nodes are complicated and capturing it with a single number would be a bad idea. You could go for raw transistor density which would be better but it misses a lot of the nuances in design.
Comments
There's no tie to what those terms mean and the actual engineering of the chips.
The "2nm node" is a marketing term to indicate its placement relative to previous iterations and competitors.
The reality is that process nodes are complicated and capturing it with a single number would be a bad idea. You could go for raw transistor density which would be better but it misses a lot of the nuances in design.